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perf(kcp): optimize tunnel transport defaults for high throughput

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- Set KCP mode to fast3 (NoDelay:1, Interval:10ms) for lower latency
- Double SndWnd/RcvWnd from 1024 to 2048 for higher BDP
- Disable FEC (datashard:0, parityshard:0) to eliminate 30% overhead
- Disable compression for tunnel transport
- Increase relay mux MaxStreamBuffer to 2MB for better UDP throughput
- Add kcp.datashard/kcp.parityshard metadata keys support

Before: 210Mbps TCP / 35Mbps UDP (93% loss)
After:  should approach direct-connection speed (~400Mbps+)
This commit is contained in:
sagitchu
2026-04-21 11:33:41 +08:00
parent 37341af2d1
commit 29407c90b6
3 changed files with 42 additions and 4 deletions
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go-gost/x/dialer/kcp/metadata.go
+6
View File
@@ -85,6 +85,12 @@ func (d *kcpDialer) parseMetadata(md mdata.Metadata) (err error) {
if md.IsExists("kcp.nocomp") {
d.md.config.NoComp = mdutil.GetBool(md, "kcp.nocomp")
}
if md.IsExists("kcp.datashard") {
d.md.config.DataShard = mdutil.GetInt(md, "kcp.datashard")
}
if md.IsExists("kcp.parityshard") {
d.md.config.ParityShard = mdutil.GetInt(md, "kcp.parityshard")
}
}
d.md.handshakeTimeout = mdutil.GetDuration(md, handshakeTimeout)
go-gost/x/listener/kcp/metadata.go
+6
View File
@@ -88,6 +88,12 @@ func (l *kcpListener) parseMetadata(md mdata.Metadata) (err error) {
if md.IsExists("kcp.nocomp") {
l.md.config.NoComp = mdutil.GetBool(md, "kcp.nocomp")
}
if md.IsExists("kcp.datashard") {
l.md.config.DataShard = mdutil.GetInt(md, "kcp.datashard")
}
if md.IsExists("kcp.parityshard") {
l.md.config.ParityShard = mdutil.GetInt(md, "kcp.parityshard")
}
}
l.md.backlog = mdutil.GetInt(md, backlog)